Due to an increase in email abuse, new non-BGP tunnels now have SMTP blocked by default.
If you are a Sage, you can re-enable SMTP by visiting the tunnel details page for that specific tunnel and selecting the 'Unblock SMTP' option under the Advanced tab. Because this is now also being abused, we've disabled SMTP for new accounts for now, and the Sage removal is not available for those. If you need SMTP (tcp/25), please email
ipv6@he.net and explain your need for it. SMTP-MSA (tcp/587) is unaffected. Existing tunnels have not been filtered.
This does not affect certification e-mail tests, since that traffic is still explicitly permitted.
Here's the matrix of how the blocking is implemented, since people seem to be a little confused.
| Account Date | Tunnel Date | Certification Level | SMTP Status |
| Before this post | Before this post | Any | Not filtered |
| Before this post | After this post | Not Sage | Filtered |
| Before this post | After this post | Sage | Option to unfilter under 'Advanced' |
| After this post | n/a | Not Sage | Filtered. Contact ipv6@he.net if needed, with your use justification. Do note, non-Sages will likely need more detailed justification. |
| After this post | n/a | Sage | Filtered. Contact ipv6@he.net as above, with your use justification. |
